摘要
使用标准k-ε湍流模型和耗散率修正k-ε湍流模型分别对轻型运动飞机机翼低速绕流问题进行计算。计算了在来流攻角为13. 87°、雷诺数为1. 52×106条件下机翼表面压力系数分布和流向速度在流场中不同位置上的损耗情况,并与实验数据进行对比。结果表明:对机翼进行低速绕流数值计算时,使用耗散率修正k-ε湍流模型相较于标准k-ε湍流模型能更好的模拟出机翼尾迹流动中速度损耗情况。
The standard k-ε turbulent model and the modified dissipation rate k-ε turbulent model(MDR k-ε) were computed for turbulence flow over Light sport aircraft airfoil.The flow characteristics on the surface of the wing of light sport aircraft were analyzed in detail under a attack angle of 13.87°and Reynolds number of 1.52×10~6 including pressure coefficient and the loss of velocities in different positions in the flow field were compared with the experimental data.The results show that the velocity loss in wing wake flow can be better simulated by using modified dissipation rate k-ε turbulence model than the standard k-ε turbulence model.
作者
邱福生
林伟航
任春颖
QIU Fu-sheng;LIN Wei-hang;REN Chun-ying(College of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China)
出处
《沈阳航空航天大学学报》
2020年第1期1-7,共7页
Journal of Shenyang Aerospace University
基金
辽宁省自然科学基金(项目编号:20180550526)
关键词
轻型运动飞机
翼型绕流
湍流模型
尾迹流动
耗散率修正
light sport aircraft
airfoil around flow
turbulence model
wake flow
modified dissipation rate
